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dayzerosec.com | ||
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venam.net
An executable is something that causes a computer to perform some tasks according to encoded instructions. It's in opposition to a data file which must be parsed by another program to be meaningful, for example an image or video. The instructions are usually in machine code, read by the cpu and so dependent on the cpu architecture. An ex... |
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xcellerator.github.io
Okay, so you've built your first kernel module, but now you want to make it do something cool - something like altering the behaviour of the running kernel. The way we do this is by function hooking, but the question is - how do we know which functions to hook? Luckily for us, there is already a great list of potential targets: syscalls! Syscalls (or system calls) are kernel functions that can be called from userspace, and are required for almost anything remotely interesting. |
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nfil.dev
This post documents my attempts to manage to jump (or return?) from kernel-space to usermode in my Rust kernel so that it can do what a kernel is supposed to actually do: give the CPU to user programs. That's pretty exciting! In the next part, we'll even take control back from the programs so that we can implement a scheduler. |
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0x44.cc
[AI summary] The article provides an in-depth explanation of reverse engineering concepts, including CPU operations, memory representation, data structures, and disassembly techniques. It guides readers through understanding machine code, endianness, signed integers, and how to analyze C code using tools like Visual Studio and disassemblers. |
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